Zobrazeno 1 - 10
of 200
pro vyhledávání: '"A Eschenlohr"'
Autor:
Kämmerer, Lea, Kämmerer, Gérald, Gruber, Manuel, Grunwald, Jan, Lojewski, Tobias, Mercadier, Laurent, Guyader, Loïc Le, Carley, Robert, Carinan, Cammille, Gerasimova, Natalia, Hickin, David, Van Kuiken, Benjamin E., Mercurio, Giuseppe, Teichmann, Martin, Kuppusamy, Senthil Kumar, Scherz, Andreas, Ruben, Mario, Sokolowski-Tinten, Klaus, Eschenlohr, Andrea, Ollefs, Katharina, Schmitz-Antoniak, Carolin, Tuczek, Felix, Kratzer, Peter, Bovensiepen, Uwe, Wende, Heiko
The photoinduced switching of Fe(II)-based spin-crossover complexes from singlet to quintet takes place at ultrafast time scales. This a priori spin-forbidden transition triggered numerous time-resolved experiments of solvated samples to elucidate th
Externí odkaz:
http://arxiv.org/abs/2312.01483
Autor:
Lojewski, Tobias, Golez, Denis, Ollefs, Katharina, Guyader, Loïc Le, Kämmerer, Lea, Rothenbach, Nico, Engel, Robin Y., Miedema, Piter S., Beye, Martin, Chiuzbăian, Gheorghe S., Carley, Robert, Gort, Rafael, Van Kuiken, Benjamin E., Mercurio, Giuseppe, Schlappa, Justina, Yaroslavtsev, Alexander, Scherz, Andreas, Döring, Florian, David, Christian, Wende, Heiko, Bovensiepen, Uwe, Eckstein, Martin, Werner, Philipp, Eschenlohr, Andrea
Photo-doped states in strongly correlated charge transfer insulators are characterized by $d$-$d$ and $d$-$p$ interactions and the resulting intertwined dynamics of charge excitations and local multiplets. Here we use femtosecond x-ray absorption spe
Externí odkaz:
http://arxiv.org/abs/2305.10145
Autor:
Engel, Robin Y., Alexander, Oliver, Atak, Kaan, Bovensiepen, Uwe, Buck, Jens, Carley, Robert, Cascella, Michele, Chardonnet, Valentin, Chiuzbaian, Gheorghe Sorin, David, Christian, Döring, Florian, Eschenlohr, Andrea, Gerasimova, Natalia, de Groot, Frank, Guyader, Loïc Le, Humphries, Oliver S., Izquierdo, Manuel, Jal, Emmanuelle, Kubec, Adam, Laarmann, Tim, Lambert, Charles-Henri, Lüning, Jan, Marangos, Jonathan P., Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Pfau, Bastian, Rösner, Benedikt, Rossnagel, Kai, Rothenbach, Nico, Scherz, Andreas, Schlappa, Justine, Scholz, Markus, Schunck, Jan O., Setoodehnia, Kiana, Stamm, Christian, Techert, Simone, Vinko, Sam M., Wende, Heiko, Yaroslavtsev, Alexander A., Yin, Zhong, Beye, Martin
The pulse intensity from X-ray free-electron lasers (FELs) can create extreme excitation densities in solids, entering the regime of non-linear X-ray-matter interactions. We show L3-edge absorption spectra of metallic nickel thin films with fluences
Externí odkaz:
http://arxiv.org/abs/2211.17008
Autor:
Guyader, Loïc Le, Eschenlohr, Andrea, Beye, Martin, Schlotter, William, Döring, Florian, Carinan, Cammille, Hickin, David, Agarwal, Naman, Boeglin, Christine, Bovensiepen, Uwe, Buck, Jens, Carley, Robert, Castoldi, Andrea, D'Elia, Alessandro, Delitz, Jan-Torben, Ehsan, Wajid, Engel, Robin, Erdinger, Florian, Fangohr, Hans, Fischer, Peter, Fiorini, Carlo, Föhlisch, Alexander, Gelisio, Luca, Gensch, Michael, Gerasimova, Natalia, Gort, Rafael, Hansen, Karsten, Hauf, Steffen, Izquierdo, Manuel, Jal, Emmanuelle, Kamil, Ebad, Karabekyan, Suren, Kluyver, Thomas, Laarmann, Tim, Lojewski, Tobias, Lomidze, David, Maffessanti, Stefano, Mamyrbayev, Talgat, Marcelli, Augusto, Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Rossnagel, Kai, Rösner, Benedikt, Rothenbach, Nico, Samartsev, Andrey, Schlappa, Justine, Setoodehnia, Kiana, Chiuzbaian, Gheorghe Sorin, Spieker, Lea, Stamm, Christian, Stellato, Francesco, Techert, Simone, Teichmann, Martin, Turcato, Monica, Van Kuiken, Benjamin, Wende, Heiko, Yaroslavtsev, Alexander, Zhu, Jun, Molodtsov, Serguei, David, Christian, Porro, Matteo, Scherz, Andreas
Publikováno v:
J. Synchrotron Rad. (2023). 30, 284-300
Femtosecond transient soft X-ray Absorption Spectroscopy (XAS) is a very promising technique that can be employed at X-ray Free Electron Lasers (FELs) to investigate out-of-equilibrium dynamics for material and energy research. Here we present a dedi
Externí odkaz:
http://arxiv.org/abs/2211.04265
Autor:
Lojewski, Tobias, Elhanoty, Mohamed F., Guyader, Loïc Le, Grånäs, Oscar, Agarwal, Naman, Boeglin, Christine, Carley, Robert, Castoldi, Andrea, David, Christian, Deiter, Carsten, Döring, Florian, Engel, Robin Y., Erdinger, Florian, Fangohr, Hans, Fiorini, Carlo, Fischer, Peter, Gerasimova, Natalia, Gort, Rafael, de Groot, Frank, Hansen, Karsten, Hauf, Steffen, Hickin, David, Izquierdo, Manuel, Van Kuiken, Benjamin E., Kvashnin, Yaroslav, Lambert, Charles-Henri, Lomidze, David, Maffessanti, Stefano, Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Pace, Matthias, Porro, Matteo, Rezvani, Javad, Rösner, Benedikt, Rothenbach, Nico, Samartsev, Andrey, Scherz, Andreas, Schlappa, Justina, Stamm, Christian, Teichmann, Martin, Thunstrom, Patrik, Turcato, Monica, Yaroslavtsev, Alexander, Zhu, Jun, Beye, Martin, Wende, Heiko, Bovensiepen, Uwe, Eriksson, Olle, Eschenlohr, Andrea
The complex electronic structure of metallic ferromagnets is determined by a balance between exchange interaction, electron hopping leading to band formation, and local Coulomb repulsion. The interplay between the respective terms of the Hamiltonian
Externí odkaz:
http://arxiv.org/abs/2210.13162
Autor:
Elliott, P., Eschenlohr, A., Chen, J., Shallcross, S., Bovensiepen, U., Dewhurst, J. K., Sharma, S.
Publikováno v:
Adv. Mater. Interfaces 9, 2201233 (2022)
Spin injection across interfaces driven by ultrashort optical pulses on femtosecond timescales constitutes a new way to design spintronics applications. Targeted utilization of this phenomenon requires knowledge of the efficiency of non-equilibrium s
Externí odkaz:
http://arxiv.org/abs/2206.00498
Autor:
A Fognini, G Salvatella, T U Michlmayr, C Wetli, U Ramsperger, T Bähler, F Sorgenfrei, M Beye, A Eschenlohr, N Pontius, C Stamm, F Hieke, M Dell'Angela, S de Jong, R Kukreja, N Gerasimova, V Rybnikov, H Redlin, J Raabe, A Föhlisch, H A Dürr, W Wurth, D Pescia, A Vaterlaus, Y Acremann
Publikováno v:
New Journal of Physics, Vol 16, Iss 4, p 043031 (2014)
Spin-resolved photoemission is one of the most direct ways of measuring the magnetization of a ferromagnet. If all valence band electrons contribute, the measured average spin polarization is proportional to the magnetization. This is even the case i
Externí odkaz:
https://doaj.org/article/85f6a1c462be47129fb1a275cf64bb04
Autor:
Rothenbach, N., Gruner, M. E., Ollefs, K., Schmitz-Antoniak, C., Salamon, S., Zhou, P., Li, R., Mo, M., Park, S., Shen, X., Weathersby, S., Yang, J., Wang, X. J., Šipr, O., Ebert, H., Sokolowski-Tinten, K., Pentcheva, R., Bovensiepen, U., Eschenlohr, A., Wende, H.
Publikováno v:
Phys. Rev. B 104, 144302 (2021)
Time-dependent and constituent-specific spectral changes in soft near edge X-ray spectroscopy (XAS) of an [Fe/MgO]$_8$ metal/insulator heterostructure upon laser excitation are analyzed at the O K-edge with picosecond time resolution. The oxygen abso
Externí odkaz:
http://arxiv.org/abs/1911.06201
Autor:
Rothenbach, N., Gruner, M. E., Ollefs, K., Schmitz-Antoniak, C., Salamon, S., Zhou, P., Li, R., Mo, M., Park, S., Shen, X., Weathersby, S., Yang, J., Wang, X. J., Pentcheva, R., Wende, H., Bovensiepen, U., Sokolowski-Tinten, K., Eschenlohr, A.
Publikováno v:
Phys. Rev. B 100, 174301 (2019)
The element specificity of soft X-ray spectroscopy makes it an ideal tool for analyzing the microscopic origin of ultrafast dynamics induced by localized optical excitation in metal-insulator heterostructures. Using [Fe/MgO]$_n$ as a model system, we
Externí odkaz:
http://arxiv.org/abs/1902.05264
Autor:
Chen, J., Bovensiepen, U., Eschenlohr, A., Müller, T., Elliott, P., Gross, E. K. U., Dewhurst, J. K., Sharma, S.
Publikováno v:
Phys. Rev. Lett. 122, 067202 (2019)
By combining interface-sensitive non-linear magneto-optical experiments with femtosecond time resolution and ab-initio time-dependent density functional theory, we show that optically excited spin dynamics at Co/Cu(001) interfaces proceeds via spin-d
Externí odkaz:
http://arxiv.org/abs/1803.03090